Bent axle shaft?

[Bryann04TJ]

I been chasing vibrations for a month, I took the jeep back to the shop for a very small pinion seal leak to check their work and see what could be the cause of the vibrations and they call me to show me that theres a wobble in the rear tires, I just go these installed a month ago and haven't been to any trails lol. So does it this look like both axle shafts are bent? Also would driving like this fuck anything else up? I got these 10 factory 30 spline shafts and 5.13 gears installed a month ago along with the ox locker



took wheels off and no wobble

 

[Vinman]

Is the rim wobbling or just the tire? It’s hard to see on my phone.
I would measure runout on the rim and if it doesn’t run true, remove the rim and measure the axle flange itself.

 

[Bryann04TJ]

Is the rim wobbling or just the tire? It’s hard to see on my phone.
I would measure runout on the rim and if it doesn’t run true, remove the rim and measure the axle flange itself.

the rim is wobbling, you can see on the first video the drum break is wobbling also.

 

[Vinman]

the rim is wobbling, you can see on the first video the drum break is wobbling also.

Pull the drum off and see if theres anything on the surface of the axle flange that would prevent the drum from seating flat against the flange

 

[JEEPCJTJ]

Also check the inside of the brake drum while your at it.

The second two videos don't show anything but tires. The first one is kinda short and the potato camera was moving around too much.

Now that I've mentioned issues I've had with my potato camera, I thought about something else. You could start the Jeep up and put it in gear while the wheels and drums are off and see what the axle flange is doing.

 

[Bryann04TJ]

Also check the inside of the brake drum while your at it.

The second two videos don't show anything but tires. The first one is kinda short and the potato camera was moving around too much.

Now that I've mentioned issues I've had with my potato camera, I thought about something else. You could start the Jeep up and put it in gear while the wheels and drums are off and see what the axle flange is doing.

idk what youre looking at but the videos are clear as day lol, theres a clear wobble in both tires and the drum wobbles aswell. but ill check it out with the drums off,

 

[Vinman]

Could be as minor as debris on the drum or axle flange mating surfaces.

 

[Lou]

My revolution rear axle shafts did not allow my drums to seat properly. This was seen once I removed the drums and observed a groove in the drum flange. Put the jeep on jack stands, ran it in 4th gear and used my grinder to clearance the flange.

 

[hosejockey61]

The absolute best way to identify if it's the shaft or not is to put the axle on jackstands and remove the tires and drums. put it in 1st gear and let it idle. Hopefully both shafts turn. Watch the flange for wobble. If it doesn't wobble then start working your way out.

 

[Flivver250]

My friend's JK had a warped rear axle. We replaced them both, problem solved. He had no idea how it happened. You can probably check it with a dial indicator. Did you try the front rims on it for additional confirmation?

 

[Bryann04TJ]

W

Could be as minor as debris on the drum or axle flange mating surfaces.

This eliminates the axle shafts then

 

[hosejockey61]

W


This eliminates the axle shafts then

Correct. Shafts look good to me

Put your drums on next and secure then with nuts. If your lug nuts have caps on the end you may have to find others that don't. Run same test. If you get the wobble back, the you know the drum is bad or you have interference issues as described in an above post. If you don't have wobble, then you know it's the wheels or the tires.

 

[JEEPCJTJ]

idk what youre looking at but the videos are clear as day lol, theres a clear wobble in both tires and the drum wobbles aswell. but ill check it out with the drums off,

I opened all the videos to full screen. They are clear as day. The second two do show the tires wobbling but there's no way to tell what it is from.

The first video I watched at least a dozen times and did so again just now. I wanted to see if the wheel was getting closer and farther from the lower control arm mount and/or the tire closer and farther from the lift(?) it is on. I can't quite tell which is worse or if they both exist. If you want it called based on that video, it's your tire. If you want anyone to lay some money on that claim we need a better video.

I am glad that it isn't your axle. Those videos show that very well.

 

[Lou]

Take a look at your drums and take a look at the picture I posted. There should be no groove in the flared portion of the drum.

 

[Bryann04TJ]

Take a look at your drums and take a look at the picture I posted. There should be no groove in the flared portion of the drum.

I did the test with the drums only and it wobbles, i believe there was a groove in them, i should of taken a picture. but its the drum sure.

 

[Bryann04TJ]

delete

 

[Lou]

It’s not the drums, it’s the axle shafts.

 

[Bryann04TJ]

It’s not the drums, it’s the axle shafts.

How. You can see there's no shaft wobble with the drums off.

 

[hosejockey61]

The interference issue lies with the shafts though. Something on the face of the shaft is the problem. Can you take a pic of the shaft flange head on?

 

[Lou]

The axle shaft flange is larger than stock. The flange is contacting the drum where it shouldn’t. You need to grind a bevel in the shaft to clear the drum. See my above pictures of my axle shaft after I beveled the edge.